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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js new file mode 100644 index 0000000000..fa6d96cb83 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js @@ -0,0 +1,68 @@ +// Copyright (C) 2021 Microsoft. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-%typedarray%.prototype.findlast +description: > + Change values during predicate call +info: | + %TypedArray%.prototype.findLast (predicate [ , thisArg ] ) + + 5. Let k be len - 1. + 6. Repeat, while k ≥ 0, + ... + c. Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)). + ... + +includes: [compareArray.js, testTypedArray.js] +features: [TypedArray, array-find-from-last] +---*/ + +testWithTypedArrayConstructors(function(TA) { + var arr = [1, 2, 3]; + var sample; + var result; + + sample = new TA(3); + sample.findLast(function(val, i) { + sample[i] = arr[i]; + + assert.sameValue(val, 0, "value is not mapped to instance"); + }); + assert(compareArray(sample, arr), "values set during each predicate call"); + + sample = new TA(arr); + result = sample.findLast(function(val, i) { + if ( i === 2 ) { + sample[0] = 7; + } + return val === 7; + }); + assert.sameValue(result, 7, "value found"); + + sample = new TA(arr); + result = sample.findLast(function(val, i) { + if ( i === 2 ) { + sample[0] = 7; + } + return val === 1; + }); + assert.sameValue(result, undefined, "value not found"); + + sample = new TA(arr); + result = sample.findLast(function(val, i) { + if ( i < 2 ) { + sample[2] = 7; + } + return val === 7; + }); + assert.sameValue(result, undefined, "value not found - changed after call"); + + sample = new TA(arr); + result = sample.findLast(function() { + sample[2] = 7; + return true; + }); + assert.sameValue(result, 3, "findLast() returns previous found value"); +}); + +reportCompare(0, 0); |